Thomas Boston, Works, 1:656:
Sanctification is a great benefit: whom the Lord bestows it upon, he puts an honour on, for they are set apart for himself. There is an intrinsic glory in holiness; Ps. 45:13, “The King’s daughter is all glorious within.” God is glorious in it, and therefore no wonder it be the glory of the creature. When the Lord makes one holy, he does more for him than if he would give him all the gold of the Indies or make him sole monarch of the world. Nay, the gift of sanctification is more worth than the Spirit of prophecy or the faith of miracles: for men may be ruined notwithstanding these, but not if they have this.
Sanctification is a great benefit: whom the Lord bestows it upon, he puts an honour on, for they are set apart for himself. There is an intrinsic glory in holiness; Ps. 45:13, “The King’s daughter is all glorious within.” God is glorious in it, and therefore no wonder it be the glory of the creature. When the Lord makes one holy, he does more for him than if he would give him all the gold of the Indies or make him sole monarch of the world. Nay, the gift of sanctification is more worth than the Spirit of prophecy or the faith of miracles: for men may be ruined notwithstanding these, but not if they have this.